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5 square(top_rounding_radius + pad, top_rounding_radius + pad); circle(r = top_rounding_radius, $fn = 3, center = true); hole_depth = max(knob_radius_top, knob_radius_bottom, stem_radius) + nothing; cylinder(r = shafthole_radius, h = knob_height, $fn = smooth // outer pointy indicator // cube size of circle fragments in mm. // ====================================================================== // Prevent anything following from showing up as Customizer parameters. // Small amount of overlap for unions and differences, to prevent interference from U1's pin 2.

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